Shanai Marriage Honey (2020)

Both are dramas with a contract marriage between the main couple.
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Both:
- sweet romantic jdramas (both characters are the hopeless romantic kind)
- respectful and nontoxic lead characters
- steamy but steamy smut scenes
- cohabitation

Difference:
- In CNK, the characters know each other from high school and then they meet up in the present time.
- In SMH, they do not know each other that well.